<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
    </head>
    <body>
        <script type="text/javascript">
            var ze = /hello/i;
            console.log([ze]);

            var str = "HellO";
            console.log(ze.test(str));

            var z = new RegExp("^acb[a-z]$","i");
            console.log(z.test("acbe"));
            
        
        
        
        
        
        </script>
    </body>
</html>